1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
malfutka [58]
4 years ago
11

A hiker walks 20.51 m at 33.16 degrees. What is the Y component of his displacement?

Physics
1 answer:
Serhud [2]4 years ago
7 0

Answer:

<em>The y component of his displacement is 11.22 meters</em>

Explanation:

<u>Components of the displacement</u>

The displacement is a vector because it has a magnitude and a direction. Let's suppose a displacement has a magnitude r and a direction θ, measured with respect to the positive x-direction. The horizontal component of the displacement is calculated by:

x=r\cos\theta

The vertical component is calculated by:

y=r\sin\theta

The hiker has a displacement with magnitude r = 20.51 m at an angle of 33.16 degrees. Substituting in the above equation:

y=20.51\sin(33.16^\circ)

y=11.22\ m

The y component of his displacement is 11.22 meters

You might be interested in
Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 9 m into 32 cm. of water. Assu
baherus [9]

Answer:

823.46 kgm/s

Explanation:

At 9 m above the water before he jumps, Henri LaMothe has a potential energy change, mgh which equals his kinetic energy 1/2mv² just as he reaches the surface of the water.

So, mgh = 1/2mv²

From here, his velocity just as he reaches the surface of the water is

v = √2gh

h = 9 m and g = 9.8 m/s²

v = √(2 × 9 × 9.8) m/s

v = √176.4 m/s

v₁ = 13.28 m/s

So his velocity just as he reaches the surface of the water is 13.28 m/s.

Now he dives into 32 cm = 0.32 m of water and stops so his final velocity v₂ = 0.

So, if we take the upward direction as positive, his initial momentum at the surface of the water is p₁ = -mv₁. His final momentum is p₂ = mv₂.

His momentum change or impulse, J = p₂ - p₁ = mv₂ - (-mv₁) = mv₂ + mv₁. Since m = Henri LaMothe's mass = 62 kg,

J = (62 × 0 + 62 × 13.28) kgm/s = 0 +  823.46 kgm/s = 823.46 kgm/s

So the magnitude of the impulse J of the water on him is 823.46 kgm/s

6 0
3 years ago
It takes a car 1.75 h to go from mile marker 10 to mile marker 115. What is the average speed of the car? Someone who took this
givi [52]

The distance from mile-mark 10 to mile-mark 115 is (115-10) = 105 miles.

Speed = (distance covered) / (time to cover the distance) .

Speed = (105 miles) / (1.75 hours)

Speed = (105/1.75) (mi/hr)

<em>Speed = 60 mph</em>  (B)

3 0
4 years ago
Read 2 more answers
The element magnesium has 2 valence electrons. What is the most likely charge on a magnesium ion?
RSB [31]
The charge is 2+




good luck
5 0
3 years ago
How dense the medium is in the compression part of the wave, and how
ivolga24 [154]
How dense the medium is in the compression part of the wave and how rare the medium is in the rarefaction part of the wave is a measure of the longitudinal wave's amplitude.
4 0
3 years ago
A motor has a rating power of 20 W and motor is used for 10 s. Calculate the
zepelin [54]

Explanation:

oii ay school ens?

6 0
4 years ago
Other questions:
  • The mass of a steel wrecking ball is 1.50 E3 kg. What power is used to raise it to a height of 40.0 m if the work is done in 20.
    7·1 answer
  • Which of the following is one way that technology can improve procut<br> ?
    13·1 answer
  • A person doing chin-up weighs 700.0 N, disregarding the weight of the arms. During the first 25.0 cm of the lift, each arm exert
    8·2 answers
  • Speedy Sue, driving at 34.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 160 m ahead traveling at 5.40 m/s
    6·2 answers
  • Explain how muscles are effected by space travel
    9·1 answer
  • In zoes egg experiment which two forces are balanced to keep it from hitting the pan
    7·1 answer
  • Which is the temperature that Fahrenheit and Celsius thermometers would
    5·2 answers
  • What is the correct answer?
    7·1 answer
  • If you are going 60 mph what is your speed in m per second
    7·1 answer
  • If you apply an effort of 240N to a simple machine with a mechanical advantage of 3, what resistance force will the machine prod
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!